What people love (and don’t love)
What people love
- Excellent for drilling through tough metals like stainless steel, cast iron, and mild steel.
- Very sharp and aggressive cutting action provides fast, efficient drilling.
- Long-lasting durability, able to drill many holes without dulling quickly.
- Good value with three pieces offered at a competitive price compared to single bits elsewhere.
- Works well with cutting oil and proper technique to extend lifespan.
What people don’t love
- Not effective on hardened steel, struggles to penetrate this material.
- Bits may experience scuffing on the flutes if too much pressure is applied.
- Lifespan can be limited when used heavily on harder metals without adequate lubrication.
Highly recommended for drilling in hard metals except hardened steel, offering sharpness and value for metalworking tasks.
Summary based on customer review evidence.
Quick facts
- Brand: BECOLLO
- Price: USD 16.99
- Rating: 4.50 (651 reviews)
If you drill tough materials and need a reliable, repeatable hole size, the BECOLLO 27/64″ cobalt drill bit set gives you three matching M35 jobber-length twist bits ready for metalwork. The cobalt steel construction is designed to boost wear and heat resistance, helping the bits hold up better when drilling in harder metals.
You can view the current price and full details on Amazon here.
Each bit uses a fully ground finish for a smoother surface, reduced friction, and faster cutting. The 135° split point is built for easy self-centering starts, helping reduce walking and skating across the work surface—especially helpful on stainless steel and cast iron.
You’ll receive 3 pieces of 27/64″ drill bits packed in a plastic case for convenient storage and transport.
- M35 cobalt (5%) high speed steel to increase wear and heat resistance
- 27/64″ cutting diameter (10.67 mm) in a 3-piece set for backups and consistent sizing
- Fully ground (uncoated) twist design to reduce friction and support faster cutting
- 135° split point for self-centering starts and reduced walking
- Recommended for hard metals like stainless steel and cast iron (also works on other softer materials)
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